The drum machine Doktor Avalanche has been the only constant member of The Sisters of Mercy along with Andrew Eldritch.
The original incarnation of Doktor Avalanche was a BOSS DR-55 ("Doctor Rhythm"); the Doktor was later replaced by a Roland TR-606, soon followed by a TR-808, and, briefly, a TR-909. On one album, First and Last and Always, an Oberheim DMX bore the Doktor name.
With increased financial resources from sale of the album, the Doktor was upgraded to a Yamaha…
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